El cangrejo ermitaño

¿Sabías que los insectos palo se llaman ninfas cuando son jóvenes? Las ninfas cambian la piel cuando crecen. Aprende más datos fascinantes en Los insectos palo, uno de los libros de Insectos Fascinantes. Did you know that stick insects are called nymphs when they are young? Nymphs shed their skin as they grow. Learn more fascinating facts in Stick Insects, a Fascinating Insects book.

In this biographical book, young readers will learn about the brave life of Harriet Tubman. Readers will discover how Tubman bravely escaped from her life as a slave to cross the Mason-Dixon line into freedom and how she helped hundreds of other slaves into freedom through the Underground Railroad with the help of abolitionists. The vivid images, stunning facts, and supportive text work in conjunction with the helpful glossary, index, and timeline of Tubman's life to give readers an engaging experience as they move from cover to cover. This book has been translated into Spanish.

Examines the nature of inclined planes and wedges, how they can reduce the amount of force necessary to perform work, and ways in which they are used.

Introducción, traducción y notas de J. L. Calvo Martínez y M. a D. Sánchez Romero. Revisada por A. Pérez Jiménez.

Un halcon peregrino (Kan) abandonando su nido, encontrara a la que sera su companera de viaje (Sopdu). Con ella iniciara, a traves de Asturias, un viaje fantastico cargado de anecdotas e historias. A vista de halcon, contemplaran asombrados la belleza del territorio Astur, valles, rios, pueblos y ciudades. Viviendo una singular y apasionada historia.